dog
dogs
wug
wugs
dog
dogs
wug
wugs
toose
tooses
goose
geese
How do children learn generalizations and exceptions?
Our approach:
Parent-report checklist
Open repository of CDI data
wordbank.stanford.edu
How does morphology…
Roadmap:
For each language and measure:
value ~ 1 + (1|stem)
null
value ~ age + (1|stem)
age only
value ~ verbs + (1|stem)
verbs only
value ~ age + verbs + (1|stem)
age and verbs
value ~ age * verbs + (1|stem)
age, verbs, and their interaction
value ~ age + verbs + verbs^2 + (1|stem)
age, verbs, and verbs quadratically
value ~ age * verbs + age * verbs^2 + (1|stem)
age, verbs, verbs quadratically, and age-verbs interactions
main effects: age + verbs + verbs^2
interactions: age * verbs + age * verbs^2
stem only: says go, doesn’t say went/goed/wented
stem only: says go, doesn’t say went/goed/wented
stem only: says go, doesn’t say went/goed/wented
stem only: says go, doesn’t say went/goed/wented
stem only: says go, doesn’t say went/goed/wented
stem only: says go, doesn’t say went/goed/wented
stem only: says go, doesn’t say went/goed/wented
stem only: says go, doesn’t say went/goed/wented
stem + correct: says go and went, doesn’t say goed/wented
stem + correct: says go and went, doesn’t say goed/wented
stem + correct: says go and went, doesn’t say goed/wented
stem + correct: says go and went, doesn’t say goed/wented
stem + correct: says go and went, doesn’t say goed/wented
stem + correct: says go and went, doesn’t say goed/wented
stem + correct: says go and went, doesn’t say goed/wented
stem + overregularized: says go and goed/wented
stem + overregularized: says go and goed/wented
stem + overregularized: says go and goed/wented
stem + overregularized: says go and goed/wented
stem + overregularized: says go and goed/wented
stem + overregularized: says go and goed/wented
stem + overregularized: says go and goed/wented
value ~ age + verbs + verbs^2 + (1 + age + verbs | stem)
value ~ age + verbs + verbs^2 + (1 + age + verbs | stem)
value ~ age + verbs + verbs^2 + (1 + age + verbs | stem)
value ~ age + verbs + verbs^2 + (1 + age + verbs | stem)
value ~ age + verbs + verbs^2 + (1 + age + verbs | stem)
value ~ age + verbs + verbs^2 + (1 + age + verbs | stem)
verbs that are correctly inflected more are overregularized more
for verbs for which inflection is more influenced by vocabulary size, overregularization is also more influenced by vocabulary size
for verbs for which inflection is more influenced by age, overregularization is less influenced by age
verbs that are correctly inflected more are influenced by vocabulary size less
verbs that are overregularized more are influenced by vocabulary size less
verbs that are correctly inflected more are influenced by age less
verbs that are overregularized more are ???
for verbs for which inflection is influenced by vocabulary size more, inflection is influenced by age more
???
All data and code (🚧🚧🚧): github.com/mikabr/cdi-morph